CaratHunter
Plans
Radiant|Lab Grown|IGI

0.81ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG648465420

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG648465420

Diamond specifications and retailer prices

From $222 NZD
$125 USD
As of October 30, 2026
Save $711 NZD (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $933 NZD at Friendly Diamonds · As of October 31, 2026
View at Friendly Diamonds

About this 0.81ct lab-grown radiant diamond

This 0.81ct lab-grown radiant sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG648465420 or 648465420. Listed at 13 retailers as of October 30, 2026, with prices from $222 to $933, a $711 spread on the same certified stone. Friendly Diamonds lists it at $933. 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

0.81
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.8°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG648465420
Dimensions6.43 × 4.60 × 3.10 mm
L/W Ratio1.40
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.43 mm4.60 mm0.81 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG648465420
Side View
Table 67.0%Crown 46.8°Girdle: MED-STKPavilion 35.9°Culet: NoneDepth 67.4%

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 30
Current: $933 NZD|Low: $222 NZD|High: $1,331 NZD|Avg: $580 NZD
Friendly Diamonds
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
Retailer 16
November 1, 2026
Retailer 10$222 NZD
Retailer 6$257 NZD
Retailer 12$293 NZD
Retailer 5$318 NZD
Retailer 11$399 NZD
Retailer 16$421 NZD
Retailer 15$452 NZD
Retailer 2$456 NZD
Retailer 9$492 NZD
Retailer 3$527 NZD
Retailer 4$566 NZD
Retailer 13$699 NZD
Retailer 14$884 NZD
Friendly Diamonds$933 NZD
Retailer 7$1,094 NZD
Retailer 8$1,331 NZD

5 data points across 16 retailers

13 retailers$222 NZD to $933 NZD

A
Cheapest Retailer
-
$222 NZD
$125 USD
A
Retailer 2
-
$257 NZD
$145 USD
View
A
Retailer 3
-
$293 NZD
$165 USD
View
A
Retailer 4
-
$318 NZD
HK$1,400 HKD
View
A
Retailer 5
-
$399 NZD
£177 GBP
View
A
Retailer 6
-
$421 NZD
$237 USD
View
A
Retailer 7
-
$456 NZD
£202 GBP
View
A
Retailer 8
-
$492 NZD
€264 EUR
View
B+
Retailer 9
-
$527 NZD
$297 USD
View
B+
Retailer 10
-
$566 NZD
£251 GBP
View
B+
Retailer 11
-
$699 NZD
$394 USD
View
B
Retailer 12
-
$884 NZD
$498 USD
View
Most Expensive
B
Friendly Diamonds
6558455 · Oct 31
$933 NZD
$526 USD
View
12 more retailers have this diamond
Prices start from $222 NZDSave up to $711 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
0.81ct Radiant
$222 NZD