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0.51ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG706519792

Shape and cutting style on the report: Round brilliant

Certificate IGI LG706519792

Diamond specifications and retailer prices

From $93 USD
As of October 29, 2026
Save $758 USD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $851 USD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG706519792 or 706519792. Listed at 15 retailers as of October 28, 2026, with prices from $93 to $851, a $758 spread on the same certified stone. Reve Diamonds lists it at $851. 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

0.51
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG706519792
Dimensions5.14 × 5.18 × 3.11 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
Top View
5.14 mm5.18 mm0.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG706519792
Side View
Table 60.0%Crown 34.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $215 USD|Low: $72 USD|High: $851 USD|Avg: $293 USD|+9.4%
Retailer 1
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
Reve Diamonds
October 29, 2026
Retailer 3$93 USD
Retailer 11$104 USD
Retailer 5$107 USD
Retailer 12$122 USD
Retailer 13$122 USD
Retailer 9$165 USD
Retailer 1$215 USD
Retailer 6$239 USD
Retailer 8$239 USD
Retailer 14$266 USD
Retailer 10$347 USD
Retailer 4$369 USD
Retailer 2$428 USD
Retailer 7$845 USD
Reve Diamonds$851 USD

43 data points across 15 retailers

15 retailers$93 USD to $851 USD

A
Cheapest Retailer
-
$93 USD
A
Retailer 2
-
$104 USD
View
Final sale: no returns
A
Retailer 3
-
$107 USD
View
A
Retailer 4
-
$122 USD
View
A
Retailer 5
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$122 USD
View
A
Retailer 6
-
$165 USD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$215 USD
£169 GBP
View
B+
Retailer 8
-
$239 USD
View
B+
Retailer 9
-
$239 USD
€228 EUR
View
B+
Retailer 10
-
$266 USD
View
B+
Retailer 11
-
$347 USD
View
B+
Retailer 12
-
$369 USD
View
B
Retailer 13
-
$428 USD
View
B
Retailer 14
-
$845 USD
£665 GBP
View
Most Expensive
B
Reve Diamonds
2AED393F3 · Oct 28
$851 USD
View
14 more retailers have this diamond
Prices start from $93 USDSave up to $758 USD

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
0.51ct Round
$93 USD