Heart|Natural|GIA

0.81ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 7551723254

Certificate GIA 7551723254

Diamond specifications and retailer prices

From $1,042 USD
As of November 1, 2026
Save $183 USD (15%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,225 USD 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 7551723254. Listed at 4 retailers as of October 31, 2026, with prices from $1,042 to $1,225, a $183 spread on the same certified stone. Blue Nile lists it at $1,225. 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
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551723254
Dimensions5.57 × 6.66 × 3.68 mm
L/W Ratio1.20
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
5.57 mm6.66 mm0.81 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 7551723254
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 55.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,225 USD|Low: $1,042 USD|High: $1,363 USD|Avg: $1,155 USD|-10.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 3$1,042 USD
Retailer 2$1,115 USD
Retailer 4$1,128 USD
Blue Nile$1,225 USD

39 data points across 4 retailers

4 retailers$1,042 USD to $1,225 USD

A
Cheapest Retailer
-
$1,042 USD
A
Retailer 2
-
$1,115 USD
£878 GBP
View
A
Retailer 3
-
$1,128 USD
SGD 1,524 SGD
View
Most Expensive
B+
Blue Nile
29693554 · Oct 31
$1,225 USD
View
3 more retailers have this diamond
Prices start from $1,042 USDSave up to $183 USD

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
$1,042 USD