CaratHunter
Plans
Round|Lab Grown|IGI

0.31ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG704592349

Shape and cutting style on the report: Round brilliant

Certificate IGI LG704592349

Diamond specifications and retailer prices

From $138 NZD
$78 USD
As of October 29, 2026
Save $1,119 NZD (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,257 NZD at MOH London · As of October 26, 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 LG704592349 or 704592349. Listed at 13 retailers as of October 26, 2026, with prices from $138 to $1,257, a $1,119 spread on the same certified stone. MOH London lists it at $1,257. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG704592349
Dimensions4.35 × 4.33 × 2.70 mm
L/W Ratio1.00
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
4.35 mm4.33 mm0.31 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG704592349
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

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: $1,257 NZD|Low: $105 NZD|High: $1,264 NZD|Avg: $393 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 13$138 NZD
Retailer 9$154 NZD
Retailer 4$160 NZD
Retailer 10$183 NZD
Retailer 11$183 NZD
Retailer 7$231 NZD
Retailer 2$295 NZD
Retailer 6$369 NZD
Retailer 5$378 NZD
Retailer 3$550 NZD
Retailer 8$573 NZD
Retailer 12$656 NZD
MOH London$1,257 NZD

44 data points across 13 retailers

13 retailers$138 NZD to $1,257 NZD

A
Cheapest Retailer
-
$138 NZD
$78 USD
A
Retailer 2
-
$154 NZD
$87 USD
View
Final sale: no returns
A
Retailer 3
-
$160 NZD
$90 USD
View
A
Retailer 4
-
$183 NZD
$103 USD
View
A
Retailer 5
-
$183 NZD
$103 USD
View
Retailer 6
-
$231 NZD
$130 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$295 NZD
£131 GBP
View
B+
Retailer 8
-
$369 NZD
€198 EUR
View
B+
Retailer 9
-
$378 NZD
$213 USD
View
B+
Retailer 10
-
$550 NZD
$310 USD
View
B
Retailer 11
-
$573 NZD
$323 USD
View
B
Retailer 12
-
$656 NZD
$370 USD
View
Most Expensive
B
MOH London
LG704592349 · Oct 26
$1,257 NZD
£558 GBP
View
12 more retailers have this diamond
Prices start from $138 NZDSave up to $1,119 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
$138 NZD