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0.51ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG707549316

Shape and cutting style on the report: Round brilliant

Certificate IGI LG707549316

Diamond specifications and retailer prices

From $216 NZD
$122 USD
As of October 25, 2026
Save $1,293 NZD (86%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,510 NZD at Reve Diamonds · As of October 25, 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 LG707549316 or 707549316. Listed at 15 retailers as of October 25, 2026, with prices from $216 to $1,510, a $1,293 spread on the same certified stone. Reve Diamonds lists it at $1,510. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG707549316
Dimensions5.16 × 5.19 × 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
5.16 mm5.19 mm0.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG707549316
Side View
Table 60.0%Crown 32.3°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.1%

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 25
Current: $412 NZD|Low: $128 NZD|High: $1,510 NZD|Avg: $523 NZD|+4.7%
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
Retailer 15
Reve Diamonds
October 27, 2026
Retailer 3$165 NZD
Retailer 15$185 NZD
Retailer 5$190 NZD
Retailer 12$216 NZD
Retailer 13$216 NZD
Retailer 10$293 NZD
Retailer 8$356 NZD
Retailer 1$412 NZD
Retailer 6$424 NZD
Retailer 7$461 NZD
Retailer 14$472 NZD
Retailer 11$616 NZD
Retailer 4$655 NZD
Retailer 2$760 NZD
Retailer 9$1,498 NZD
Reve Diamonds$1,510 NZD

38 data points across 16 retailers

15 retailers$216 NZD to $1,510 NZD

Retailer 1
-
$165 NZD
$93 USD
Price last confirmed 9 days ago
Retailer 2
-
$190 NZD
$107 USD
View
Price last confirmed 8 days ago
Retailer 3
-
$216 NZD
$122 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$216 NZD
$122 USD
View
Retailer 5
-
$293 NZD
$165 USD
View
Price last confirmed 10 days ago
A
Retailer 6
-
$356 NZD
£158 GBP
View
A
Retailer 7
-
$412 NZD
€221 EUR
View
B+
Retailer 8
-
$424 NZD
$239 USD
View
B+
Retailer 9
-
$461 NZD
$260 USD
View
B+
Retailer 10
-
$472 NZD
$266 USD
View
B+
Retailer 11
-
$616 NZD
$347 USD
View
Retailer 12
-
$655 NZD
$369 USD
View
Price last confirmed 7 days ago
B
Retailer 13
-
$760 NZD
$428 USD
View
B
Retailer 14
-
$1,498 NZD
£665 GBP
View
Most Expensive
B
Reve Diamonds
32AEC2105 · Oct 25
$1,510 NZD
$851 USD
View
14 more retailers have this diamond
Prices start from $216 NZDSave up to $1,293 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
0.51ct Round
$216 NZD