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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 £1,703 GBP
$2,282 USD
As of October 31, 2026
Save £420 GBP (20%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,123 GBP 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 £1,703 to £2,123, a £420 spread on the same certified stone. Blue Nile lists it at £2,123. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £2,123 GBP|Low: £1,703 GBP|High: £2,123 GBP|Avg: £1,844 GBP
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 2£1,703 GBP
Retailer 3£1,846 GBP
Blue Nile£2,123 GBP

2 data points across 3 retailers

3 retailers£1,703 GBP to £2,123 GBP

B
Cheapest Retailer
-
£1,703 GBP
$2,282 USD
B
Retailer 2
-
£1,846 GBP
$2,474 USD
View
Most Expensive
C
Blue Nile
6009132 · Oct 31
£2,123 GBP
$2,845 USD
View
2 more retailers have this diamond
Prices start from £1,703 GBPSave up to £420 GBP

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
£1,703 GBP