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Heart|Natural|GIA

0.81ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 1

Certificate GIA 1

Diamond specifications and retailer prices

From $2,917 SGD
$2,282 USD
As of October 31, 2026
Save $720 SGD (20%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,637 SGD at Blue Nile · As of October 31, 2026
View at Blue Nile

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. Listed at 3 retailers as of October 31, 2026, with prices from $2,917 to $3,637, a $720 spread on the same certified stone. Blue Nile lists it at $3,637. 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 1
Dimensions6.56 × 6.80 × 3.31 mm
L/W Ratio1.04
Top View
6.56 mm6.80 mm0.81 ctD / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1
Side View
Table 60.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 48.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $3,637 SGD|Low: $2,917 SGD|High: $3,637 SGD|Avg: $3,159 SGD
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 2$2,917 SGD
Retailer 3$3,162 SGD
Blue Nile$3,637 SGD

2 data points across 3 retailers

3 retailers$2,917 SGD to $3,637 SGD

B
Cheapest Retailer
-
$2,917 SGD
$2,282 USD
B
Retailer 2
-
$3,162 SGD
$2,474 USD
View
Most Expensive
C
Blue Nile
6009132 · Oct 31
$3,637 SGD
$2,845 USD
View
2 more retailers have this diamond
Prices start from $2,917 SGDSave up to $720 SGD

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
$2,917 SGD