Round|Lab Grown|IGI

4.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG660448727

Shape and cutting style on the report: Round brilliant

Certificate IGI LG660448727

Diamond specifications and retailer prices

From $5,204 NZD

£2,310 GBP

As of October 30, 2026

Save $30,849 NZD (86%) vs most expensive(unlock to see where)

29 retailers carry this diamond

Most expensive: $36,054 NZD at Do Amore Diamonds · As of October 31, 2026

View at Do Amore Diamonds

About this 4.51ct lab-grown round diamond

This 4.51ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG660448727 or 660448727. Listed at 29 retailers as of October 30, 2026, with prices from $5,204 to $36,054, a $30,849 spread on the same certified stone. Do Amore Diamonds lists it at $36,054. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.51

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.7°

Pavilion angle40.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG660448727

Dimensions10.60 × 10.53 × 6.55 mm

L/W Ratio1.01

Girdle conditionFaceted

Culet sizePointed

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG660448727

Side View

Caratlytics Score

How it works →

A+

Exceptional

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30

Current: $36,054 NZD|Low: $5,030 NZD|High: $47,587 NZD|Avg: $14,226 NZD

Do Amore Diamonds

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

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Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

Retailer 17

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Retailer 19

Retailer 20

October 31, 2026

Retailer 14$5,204 NZD

Retailer 4$5,240 NZD

Retailer 10$5,868 NZD

Retailer 5$6,079 NZD

Retailer 8$6,079 NZD

Retailer 2$6,086 NZD

Retailer 7$6,150 NZD

Retailer 6$7,748 NZD

Retailer 20$8,733 NZD

Retailer 15$8,892 NZD

Retailer 18$9,228 NZD

Retailer 16$14,277 NZD

Retailer 19$14,458 NZD

Retailer 9$16,734 NZD

Retailer 3$16,756 NZD

Retailer 17$17,096 NZD

Retailer 11$22,993 NZD

Retailer 12$23,486 NZD

Retailer 13$25,231 NZD

Do Amore Diamonds$36,054 NZD

34 data points across 20 retailers

29 retailers$5,204 NZD to $36,054 NZD

A+

Cheapest Retailer

$5,204 NZD

£2,310 GBP

Retailer 2

$5,240 NZD

$2,953 USD

View

Retailer 3

$5,868 NZD

$3,307 USD

View

Final sale: no returns

Retailer 4

$6,079 NZD

$3,426 USD

View

Price last confirmed 18 days ago

Retailer 5

$6,079 NZD

$3,426 USD

View

Retailer 6

$6,086 NZD

$3,430 USD

View

Retailer 7

$6,150 NZD

$3,466 USD

View

Retailer 8

$6,771 NZD

$3,816 USD

View

Price last confirmed 36 days ago

Retailer 9

$7,097 NZD

$4,000 USD

View

Price last confirmed 37 days ago

Retailer 10

$7,747 NZD

$4,366 USD

View

Price last confirmed 34 days ago

Retailer 11

$7,748 NZD

$4,367 USD

View

Retailer 12

$7,949 NZD

HK$35,000 HKD

View

Retailer 13

$8,384 NZD

$4,725 USD

View

Retailer 14

$8,733 NZD

$4,922 USD

View

Retailer 15

$8,892 NZD

£3,946 GBP

View

Retailer 16

$9,228 NZD

$5,201 USD

View

Retailer 17

$10,834 NZD

$6,106 USD

View

Price last confirmed 33 days ago

Retailer 18

$12,344 NZD

$6,957 USD

View

Price last confirmed 89 days ago

B+

Retailer 19

$14,277 NZD

ZAR 129,997 ZAR

View

Retailer 20

$14,458 NZD

A$12,536 AUD

View

Price last confirmed 8 days ago

B+

Retailer 21

$15,332 NZD

$8,641 USD

View

B+

Retailer 22

$16,734 NZD

$9,432 USD

View

B+

Retailer 23

$16,756 NZD

$9,444 USD

View

B+

Retailer 24

$17,096 NZD

£7,587 GBP

View

Retailer 25

$19,018 NZD

£8,440 GBP

View

Price last confirmed 21 days ago

Retailer 26

$22,993 NZD

SGD 17,512 SGD

View

Retailer 27

$23,486 NZD

$13,237 USD

View

B+

Retailer 28

$25,231 NZD

$14,220 USD

View

Most Expensive

Do Amore Diamonds

27-9447D23E4 · Oct 31

$36,054 NZD

$20,320 USD

View

28 more retailers have this diamond

Prices start from $5,204 NZDSave up to $30,849 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

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A+

4.51ct Round

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