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Radiant|Natural|GIA

0.81ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 5426763283

Certificate GIA 5426763283

Diamond specifications and retailer prices

From $1,385 NZD
HK$6,100 HKD
As of November 1, 2026
Save $1,852 NZD (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,409 NZD at MOH London · As of October 25, 2026
View at MOH London

About this 0.81ct natural radiant diamond

This 0.81ct natural radiant sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5426763283. Listed at 13 retailers as of October 31, 2026, with a 134% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5426763283
Dimensions5.14 × 5.10 × 3.49 mm
L/W Ratio1.01
Top View
5.14 mm5.10 mm0.81 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5426763283
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.4%

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: Nov 1
Current: $3,409 NZD|Low: $1,363 NZD|High: $3,576 NZD|Avg: $2,395 NZD|-3.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 5$1,385 NZD
Retailer 3$1,924 NZD
Retailer 10$1,925 NZD
Retailer 11$2,096 NZD
Retailer 12$2,111 NZD
Retailer 8$2,172 NZD
Retailer 2$2,192 NZD
Retailer 4$2,449 NZD
Retailer 6$2,610 NZD
Retailer 7$2,749 NZD
Retailer 9$3,238 NZD
MOH London$3,409 NZD

42 data points across 12 retailers

13 retailers$1,385 NZD to $3,238 NZD

A
Cheapest Retailer
-
$1,385 NZD
HK$6,100 HKD
A
Retailer 2
-
$1,924 NZD
SGD 1,465 SGD
View
A
Retailer 3
-
$1,925 NZD
$1,085 USD
View
A
Retailer 4
-
$2,096 NZD
$1,181 USD
View
A
Retailer 5
-
$2,111 NZD
$1,190 USD
View
A
Retailer 6
-
$2,172 NZD
£964 GBP
View
A
Retailer 7
-
$2,192 NZD
£973 GBP
View
A
Retailer 8
-
$2,362 NZD
A$2,048 AUD
View
Retailer 9
-
$2,449 NZD
A$2,123 AUD
View
Price last confirmed 29 days ago
A
Retailer 10
-
$2,610 NZD
€1,401 EUR
View
A
Retailer 11
-
$2,749 NZD
ZAR 25,032 ZAR
View
B+
Retailer 12
-
$3,238 NZD
SGD 2,466 SGD
View
Most Expensive
MOH London
15A271AEC · Oct 25
$3,409 NZD
£1,513 GBP
View
Price last confirmed 8 days ago
12 more retailers have this diamond
Prices start from $1,385 NZDSave up to $1,852 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
$1,385 NZD