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Radiant|Natural|GIA

0.90ct D SI2 Radiant Natural Diamond

EX • D/SI2 • GIA 6551156074

Certificate GIA 6551156074

Diamond specifications and retailer prices

From $1,604 AUD
HK$8,800 HKD
As of October 30, 2026
Save $2,320 AUD (59%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,395 AUD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.9ct natural radiant diamond

This 0.9ct natural radiant sits in the just-under-one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551156074. Listed at 14 retailers as of October 29, 2026, with a 145% 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

0.90
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551156074
Dimensions6.58 × 4.86 × 3.23 mm
L/W Ratio1.35
Top View
6.58 mm4.86 mm0.90 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551156074
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.3%

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: $1,836 AUD|Low: $1,604 AUD|High: $4,138 AUD|Avg: $2,347 AUD|+7.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 11$1,604 AUD
Retailer 8$1,737 AUD
Retailer 2$1,780 AUD
Retailer 1$1,836 AUD
Retailer 9$1,848 AUD
Retailer 10$1,868 AUD
Retailer 5$2,111 AUD
Retailer 3$2,155 AUD
Retailer 7$2,602 AUD
Retailer 6$2,924 AUD
Retailer 12$3,234 AUD
Retailer 4$3,923 AUD

37 data points across 12 retailers

14 retailers$1,604 AUD to $3,923 AUD

A
Cheapest Retailer
-
$1,604 AUD
HK$8,800 HKD
A
Retailer 2
-
$1,737 AUD
$1,220 USD
View
A
Retailer 3
-
$1,780 AUD
$1,250 USD
View
A
Retailer 4
-
$1,836 AUD
$1,290 USD
View
Final sale: no returns
A
Retailer 5
-
$1,848 AUD
$1,298 USD
View
A
Retailer 6
-
$1,868 AUD
$1,313 USD
View
A
Retailer 7
-
$2,111 AUD
£1,167 GBP
View
A
Retailer 8
-
$2,155 AUD
$1,513 USD
View
A
Retailer 9
-
$2,602 AUD
£1,439 GBP
View
B+
Retailer 10
-
$2,654 AUD
View
B+
Retailer 11
-
$2,924 AUD
€1,956 EUR
View
Retailer 12
-
$3,234 AUD
$2,272 USD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
$3,923 AUD
£2,170 GBP
View
Most Expensive
NZ Jewellers
89bfa883-a198-468d-87ad-832f8b8ae758 · Sep 25
$5,395 AUD
$3,790 USD
View
Price last confirmed 36 days ago
13 more retailers have this diamond
Prices start from $1,604 AUDSave up to $2,320 AUD

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
0.90ct Radiant
$1,604 AUD