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Heart|Natural|GIA

0.81ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 2185878049

Certificate GIA 2185878049

Diamond specifications and retailer prices

From $3,731 AUD
$2,621 USD
As of October 29, 2026
Save $3,157 AUD (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,611 AUD at NZ Jewellers · As of October 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2185878049. Listed at 8 retailers as of November 1, 2026, with a 85% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.81
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2185878049
Dimensions6.80 × 6.56 × 3.31 mm
L/W Ratio1.04
Culet sizeVery Small
Top View
6.80 mm6.56 mm0.81 ctD / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2185878049
Side View
Table 60.0%CrownGirdle: THN-THKPavilionCulet: Very SmallDepth 48.7%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $8,611 AUD|Low: $2,899 AUD|High: $8,611 AUD|Avg: $4,925 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 10$2,899 AUD
Retailer 5$3,731 AUD
Retailer 6$3,731 AUD
Retailer 4$3,875 AUD
Retailer 8$4,034 AUD
Retailer 7$4,306 AUD
Retailer 9$4,809 AUD
Retailer 3$6,135 AUD
Retailer 2$6,888 AUD
NZ Jewellers$8,611 AUD

17 data points across 10 retailers

8 retailers$3,731 AUD to $6,888 AUD

B
Cheapest Retailer
-
$3,731 AUD
$2,621 USD
B
Retailer 2
-
$3,731 AUD
$2,621 USD
View
B
Retailer 3
-
$3,875 AUD
$2,722 USD
View
B
Retailer 4
-
$4,034 AUD
$2,834 USD
View
B
Retailer 5
-
$4,306 AUD
$3,025 USD
View
B
Retailer 6
-
$6,135 AUD
ZAR 69,625 ZAR
View
B
Retailer 7
-
$6,888 AUD
£3,810 GBP
View
Most Expensive
NZ Jewellers
075b42e2-0d5d-4771-a615-7a35c977362d · Oct 30
$8,611 AUD
$6,049 USD
View
Price under review
7 more retailers have this diamond
Prices start from $3,731 AUDSave up to $3,157 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.

B
0.81ct Heart
$3,731 AUD