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Oval|Lab Grown|IGI

1.76ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG512225587

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG512225587

Diamond specifications and retailer prices

From $1,174 NZD
A$1,018 AUD
As of October 31, 2026
Save $1,381 NZD (54%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,555 NZD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.76ct lab-grown oval diamond

This 1.76ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512225587 or 512225587. Listed at 4 retailers as of October 29, 2026, with prices from $1,174 to $2,555, a $1,381 spread on the same certified stone. Brilliant Earth lists it at $2,555. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.76
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512225587
Dimensions10.02 × 6.87 × 4.17 mm
L/W Ratio1.46
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
Top View
10.02 mm6.87 mm1.76 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512225587
Side View
Table 61.0%Crown 36.3°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $2,555 NZD|Low: $341 NZD|High: $4,116 NZD|Avg: $1,467 NZD
Brilliant Earth
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
October 31, 2026
Retailer 10$341 NZD
Retailer 15$681 NZD
Retailer 5$818 NZD
Retailer 12$903 NZD
Retailer 14$945 NZD
Retailer 11$967 NZD
Retailer 8$1,077 NZD
Retailer 2$1,174 NZD
Retailer 9$1,305 NZD
Retailer 7$1,473 NZD
Retailer 3$1,560 NZD
Retailer 13$1,900 NZD
Retailer 6$2,186 NZD
Brilliant Earth$2,555 NZD
Retailer 4$4,116 NZD

5 data points across 15 retailers

4 retailers$1,174 NZD to $2,555 NZD

Retailer 1
-
$818 NZD
HK$3,600 HKD
Price last confirmed 56 days ago
B+
Retailer 2
-
$1,174 NZD
A$1,018 AUD
View
Retailer 3
-
$1,900 NZD
$1,071 USD
View
Price last confirmed 51 days ago
Most Expensive
B
Brilliant Earth
6784647Y · Oct 29
$2,555 NZD
$1,440 USD
View
3 more retailers have this diamond
Prices start from $1,174 NZDSave up to $1,381 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.

B+
1.76ct Oval
$1,174 NZD