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Heart|Natural|GIA

0.90ct D SI1 Heart Natural Diamond

VG • D/SI1 • GIA 6541025827

Certificate GIA 6541025827

Diamond specifications and retailer prices

From $1,873 AUD
SGD 1,778 SGD
As of October 31, 2026
Save $3,255 AUD (63%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,128 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.9ct natural heart diamond

This 0.9ct natural heart sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6541025827. Listed at 20 retailers as of October 30, 2026, with prices from $1,873 to $5,128, a $3,255 spread on the same certified stone. NZ Jewellers lists it at $5,128. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.90
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle37.9°
Pavilion angle37.3°
OriginNatural
Grading LabGIA
CertificateGIA 6541025827
Dimensions6.82 × 6.21 × 3.40 mm
L/W Ratio1.10
Top View
6.82 mm6.21 mm0.90 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6541025827
Side View
Table 57.0%Crown 37.9°Girdle: THN-THKPavilion 37.3°Culet: NoneDepth 54.8%

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 31
Current: $5,128 AUD|Low: $1,778 AUD|High: $5,128 AUD|Avg: $2,538 AUD
NZ Jewellers
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
November 1, 2026
Retailer 10$1,873 AUD
Retailer 11$1,939 AUD
Retailer 6$2,007 AUD
Retailer 7$2,022 AUD
Retailer 3$2,103 AUD
Retailer 14$2,103 AUD
Retailer 13$2,199 AUD
Retailer 5$2,235 AUD
Retailer 8$2,345 AUD
Retailer 15$2,426 AUD
Retailer 4$2,534 AUD
Retailer 12$2,743 AUD
Retailer 9$3,071 AUD
Retailer 2$3,683 AUD
NZ Jewellers$5,128 AUD

42 data points across 15 retailers

20 retailers$1,873 AUD to $5,128 AUD

A
Cheapest Retailer
-
$1,873 AUD
SGD 1,778 SGD
A
Retailer 2
-
$1,939 AUD
$1,362 USD
View
Final sale: no returns
A
Retailer 3
-
$1,949 AUD
$1,369 USD
View
A
Retailer 4
-
$2,007 AUD
$1,410 USD
View
A
Retailer 5
-
$2,022 AUD
$1,420 USD
View
Retailer 6
-
$2,103 AUD
$1,477 USD
View
Price last confirmed 34 days ago
B+
Retailer 7
-
$2,103 AUD
$1,477 USD
View
B+
Retailer 8
-
$2,103 AUD
$1,477 USD
View
B+
Retailer 9
-
$2,199 AUD
$1,545 USD
View
B+
Retailer 10
-
$2,235 AUD
$1,570 USD
View
B+
Retailer 11
-
$2,345 AUD
£1,297 GBP
View
Retailer 12
-
$2,426 AUD
$1,704 USD
View
Price last confirmed 56 days ago
Retailer 13
-
$2,426 AUD
$1,704 USD
View
Price last confirmed 34 days ago
B+
Retailer 14
-
$2,426 AUD
$1,704 USD
View
Retailer 15
-
$2,534 AUD
£1,402 GBP
View
Price last confirmed 36 days ago
Retailer 16
-
$2,743 AUD
View
Price last confirmed 27 days ago
B+
Retailer 17
-
$3,071 AUD
ZAR 34,855 ZAR
View
B
Retailer 18
-
$3,683 AUD
£2,037 GBP
View
Retailer 19
-
$5,128 AUD
$3,602 USD
View
Price last confirmed 35 days ago
Most Expensive
B
NZ Jewellers
1ecce7fe-f8c1-4337-b136-7aed3186d941 · Oct 30
$5,128 AUD
$3,602 USD
View
19 more retailers have this diamond
Prices start from $1,873 AUDSave up to $3,255 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 Heart
$1,873 AUD