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4.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG754594164

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754594164

Diamond specifications and retailer prices

From $4,807 NZD
$2,709 USD
As of October 29, 2026
Save $28,266 NZD (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $33,073 NZD at Do Amore Diamonds · As of October 30, 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 LG754594164 or 754594164. Listed at 16 retailers as of October 29, 2026, with prices from $4,807 to $33,073, a $28,266 spread on the same certified stone. Do Amore Diamonds lists it at $33,073. 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
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594164
Dimensions10.70 × 10.74 × 6.45 mm
L/W Ratio1.00
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
Top View
10.70 mm10.74 mm4.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594164
Side View
Table 58.0%Crown 34°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.2%

Caratlytics Score

How it works →
A
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: $33,073 NZD|Low: $4,736 NZD|High: $49,042 NZD|Avg: $13,058 NZD|-2.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 14$4,807 NZD
Retailer 3$5,231 NZD
Retailer 8$5,525 NZD
Retailer 15$5,541 NZD
Retailer 17$7,692 NZD
Retailer 12$7,736 NZD
Retailer 7$7,796 NZD
Retailer 16$8,183 NZD
Retailer 13$8,678 NZD
Retailer 2$10,023 NZD
Retailer 9$10,620 NZD
Retailer 4$12,749 NZD
Retailer 5$13,562 NZD
Retailer 11$15,686 NZD
Retailer 6$21,617 NZD
Retailer 10$25,231 NZD
Do Amore Diamonds$33,073 NZD

35 data points across 17 retailers

16 retailers$4,807 NZD to $33,073 NZD

A
Cheapest Retailer
-
$4,807 NZD
$2,709 USD
A
Retailer 2
-
$5,231 NZD
$2,948 USD
View
A
Retailer 3
-
$5,525 NZD
$3,114 USD
View
Final sale: no returns
A
Retailer 4
-
$5,541 NZD
$3,123 USD
View
A
Retailer 5
-
$7,692 NZD
$4,335 USD
View
A
Retailer 6
-
$7,736 NZD
$4,360 USD
View
A
Retailer 7
-
$7,796 NZD
$4,394 USD
View
A
Retailer 8
-
$8,183 NZD
$4,612 USD
View
A
Retailer 9
-
$8,678 NZD
$4,891 USD
View
A
Retailer 10
-
$10,023 NZD
€5,380 EUR
View
B+
Retailer 11
-
$12,749 NZD
$7,185 USD
View
Retailer 12
-
$13,562 NZD
A$11,759 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$15,686 NZD
£6,961 GBP
View
Retailer 14
-
$21,617 NZD
A$18,744 AUD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
$25,231 NZD
$14,220 USD
View
Most Expensive
B
Do Amore Diamonds
27-EDBE1E8E5 · Oct 30
$33,073 NZD
$18,640 USD
View
15 more retailers have this diamond
Prices start from $4,807 NZDSave up to $28,266 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.

A
4.51ct Round
$4,807 NZD