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Heart|Natural|GIA

0.81ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 6541804776

Certificate GIA 6541804776

Diamond specifications and retailer prices

From $1,982 NZD
$1,117 USD
As of November 2, 2026
Save $2,112 NZD (52%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,947 NZD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 0.81ct natural heart diamond

This 0.81ct natural heart 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 6541804776. Listed at 18 retailers as of October 29, 2026, with a 107% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.79°
Pavilion angle42.33°
OriginNatural
Grading LabGIA
CertificateGIA 6541804776
Dimensions5.76 × 6.31 × 3.87 mm
L/W Ratio1.10
Top View
5.76 mm6.31 mm0.81 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541804776
Side View
Table 57.0%Crown 36.79°Girdle: Slightly ThickPavilion 42.33°Culet: NoneDepth 61.3%

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: Nov 2
Current: $2,451 NZD|Low: $1,441 NZD|High: $4,094 NZD|Avg: $2,521 NZD|+10.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 12$1,982 NZD
Retailer 3$2,012 NZD
Retailer 5$2,028 NZD
Retailer 9$2,058 NZD
Retailer 8$2,284 NZD
Retailer 7$2,369 NZD
Retailer 6$2,387 NZD
Retailer 1$2,451 NZD
Retailer 2$2,598 NZD
Retailer 4$2,652 NZD
Retailer 10$3,001 NZD
Retailer 11$3,177 NZD
Retailer 13$4,094 NZD

41 data points across 13 retailers

18 retailers$1,982 NZD to $4,094 NZD

A
Cheapest Retailer
-
$1,982 NZD
$1,117 USD
Final sale: no returns
A
Retailer 2
-
$2,012 NZD
$1,134 USD
View
Retailer 3
-
$2,028 NZD
$1,143 USD
View
Price last confirmed 32 days ago
Retailer 4
-
$2,028 NZD
$1,143 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
$2,058 NZD
$1,160 USD
View
Retailer 6
-
$2,106 NZD
$1,187 USD
View
Price last confirmed 32 days ago
A
Retailer 7
-
$2,284 NZD
$1,287 USD
View
Retailer 8
-
$2,340 NZD
$1,319 USD
View
Price last confirmed 56 days ago
Retailer 9
-
$2,340 NZD
$1,319 USD
View
Price last confirmed 34 days ago
B+
Retailer 10
-
$2,369 NZD
$1,335 USD
View
A
Retailer 11
-
$2,387 NZD
$1,345 USD
View
B+
Retailer 12
-
$2,451 NZD
£1,088 GBP
View
B+
Retailer 13
-
$2,598 NZD
£1,153 GBP
View
Retailer 14
-
$2,652 NZD
A$2,300 AUD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
$3,001 NZD
€1,611 EUR
View
B+
Retailer 16
-
$3,177 NZD
ZAR 28,926 ZAR
View
B
Retailer 17
-
$4,094 NZD
£1,817 GBP
View
Most Expensive
NZ Jewellers
04f28387-8860-40de-bca6-dbb8f13d8be6 · Sep 30
$4,947 NZD
$2,788 USD
View
Price last confirmed 32 days ago
17 more retailers have this diamond
Prices start from $1,982 NZDSave up to $2,112 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 Heart
$1,982 NZD