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0.31ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG685551322

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685551322

Diamond specifications and retailer prices

From $119 NZD
$67 USD
As of October 29, 2026
Save $963 NZD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,082 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 0.31ct lab-grown round diamond

This 0.31ct lab-grown round sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685551322 or 685551322. Listed at 12 retailers as of October 29, 2026, with prices from $119 to $1,082, a $963 spread on the same certified stone. MOH London lists it at $1,082. 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

0.31
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685551322
Dimensions4.42 × 4.46 × 2.62 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
4.42 mm4.46 mm0.31 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685551322
Side View
Table 57.0%Crown 32.1°Girdle: MediumPavilion 40.2°Culet: NoneDepth 59.1%

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: $1,082 NZD|Low: $119 NZD|High: $1,109 NZD|Avg: $453 NZD|-1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$119 NZD
Retailer 6$138 NZD
Retailer 2$254 NZD
Retailer 3$306 NZD
Retailer 7$346 NZD
Retailer 4$354 NZD
Retailer 10$444 NZD
Retailer 9$582 NZD
Retailer 8$685 NZD
MOH London$1,082 NZD

42 data points across 10 retailers

12 retailers$119 NZD to $1,082 NZD

A
Cheapest Retailer
-
$119 NZD
$67 USD
A
Retailer 2
-
$138 NZD
$78 USD
View
A
Retailer 3
-
$156 NZD
$88 USD
View
A
Retailer 4
-
$156 NZD
$88 USD
View
A
Retailer 5
-
$254 NZD
£113 GBP
View
A
Retailer 6
-
$306 NZD
€164 EUR
View
B+
Retailer 7
-
$346 NZD
$195 USD
View
A
Retailer 8
-
$354 NZD
£157 GBP
View
B+
Retailer 9
-
$474 NZD
$267 USD
View
B
Retailer 10
-
$582 NZD
$328 USD
View
B
Retailer 11
-
$685 NZD
$386 USD
View
Most Expensive
B
MOH London
LG685551322 · Nov 1
$1,082 NZD
£480 GBP
View
11 more retailers have this diamond
Prices start from $119 NZDSave up to $963 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
0.31ct Round
$119 NZD