Round|Lab Grown|IGI

6.15ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG635428643

Shape and cutting style on the report: Round brilliant

Certificate IGI LG635428643

Diamond specifications and retailer prices

From $20,243 NZD

$11,409 USD

As of October 29, 2026

Save $76,610 NZD (79%) vs most expensive(unlock to see where)

24 retailers carry this diamond

Most expensive: $96,853 NZD at Michael Trio · As of October 31, 2026

View at Michael Trio

About this 6.15ct lab-grown round diamond

This 6.15ct lab-grown round sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG635428643 or 635428643. Listed at 24 retailers as of October 29, 2026, with prices from $20,243 to $96,853, a $76,610 spread on the same certified stone. Michael Trio lists it at $96,853. 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

6.15

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.9°

Pavilion angle40.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG635428643

Dimensions11.84 × 11.78 × 7.18 mm

L/W Ratio1.01

Girdle conditionFaceted

Culet sizePointed

Cert comments

HEARTS & ARROWS 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 LG635428643

Side View

Caratlytics Score

How it works →

Excellent

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 29

Current: $96,853 NZD|Low: $20,243 NZD|High: $96,853 NZD|Avg: $41,393 NZD

Michael Trio

Retailer 2

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Retailer 24

November 1, 2026

Retailer 4$20,243 NZD

Retailer 16$20,442 NZD

Retailer 6$20,662 NZD

Retailer 3$21,054 NZD

Retailer 7$22,786 NZD

Retailer 8$23,483 NZD

Retailer 5$24,292 NZD

Retailer 9$24,915 NZD

Retailer 24$24,920 NZD

Retailer 10$25,048 NZD

Retailer 11$26,123 NZD

Retailer 22$27,826 NZD

Retailer 13$30,179 NZD

Retailer 21$38,140 NZD

Retailer 14$42,949 NZD

Retailer 18$43,803 NZD

Retailer 19$44,038 NZD

Retailer 23$48,907 NZD

Retailer 20$50,157 NZD

Retailer 2$64,104 NZD

Retailer 12$64,621 NZD

Retailer 17$74,442 NZD

Retailer 15$90,684 NZD

Michael Trio$96,853 NZD

30 data points across 24 retailers

24 retailers$20,243 NZD to $96,853 NZD

Cheapest Retailer

$20,243 NZD

$11,409 USD

Retailer 2

$20,442 NZD

$11,521 USD

View

Retailer 3

$20,662 NZD

$11,645 USD

View

Price last confirmed 14 days ago

Retailer 4

$21,054 NZD

$11,866 USD

View

Retailer 5

$22,786 NZD

£10,112 GBP

View

Price last confirmed 15 days ago

Retailer 6

$23,483 NZD

$13,235 USD

View

Retailer 7

$24,292 NZD

$13,691 USD

View

Retailer 8

$24,915 NZD

$14,042 USD

View

Retailer 9

$24,920 NZD

$14,045 USD

View

Retailer 10

$25,048 NZD

$14,117 USD

View

Retailer 11

$26,123 NZD

$14,723 USD

View

Retailer 12

$27,826 NZD

$15,683 USD

View

Final sale: no returns

Retailer 13

$30,179 NZD

£13,393 GBP

View

B+

Retailer 14

$38,140 NZD

£16,926 GBP

View

B+

Retailer 15

$42,949 NZD

$24,206 USD

View

B+

Retailer 16

$43,803 NZD

€23,512 EUR

View

B+

Retailer 17

$44,038 NZD

$24,820 USD

View

Retailer 18

$48,907 NZD

A$42,406 AUD

View

Price last confirmed 9 days ago

B+

Retailer 19

$50,157 NZD

ZAR 456,682 ZAR

View

Retailer 20

$64,104 NZD

A$55,583 AUD

View

Retailer 21

$64,621 NZD

$36,420 USD

View

Retailer 22

$74,442 NZD

$41,956 USD

View

Retailer 23

$90,684 NZD

$51,110 USD

View

Most Expensive

Michael Trio

5317607170 · Oct 31

$96,853 NZD

SGD 73,766 SGD

View

23 more retailers have this diamond

Prices start from $20,243 NZDSave up to $76,610 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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