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Heart|Natural|GIA

0.80ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 6552900645

Certificate GIA 6552900645

Diamond specifications and retailer prices

From £757 GBP
$1,014 USD
As of October 30, 2026
Save £134 GBP (15%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £891 GBP at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.8ct natural heart diamond

This 0.8ct 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 6552900645. Listed at 4 retailers as of October 30, 2026, with prices from £757 to £891, a £134 spread on the same certified stone. Blue Nile lists it at £891. 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

0.80
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552900645
Dimensions5.39 × 6.43 × 3.92 mm
L/W Ratio1.19
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
5.39 mm6.43 mm0.80 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6552900645
Side View
Table 62.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 60.9%

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: Oct 30
Current: £891 GBP|Low: £757 GBP|High: £980 GBP|Avg: £840 GBP|-9.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 3£757 GBP
Retailer 4£818 GBP
Retailer 2£832 GBP
Blue Nile£891 GBP

39 data points across 4 retailers

4 retailers£757 GBP to £891 GBP

A
Cheapest Retailer
-
£757 GBP
$1,014 USD
A
Retailer 2
-
£818 GBP
SGD 1,482 SGD
View
A
Retailer 3
-
£832 GBP
View
Most Expensive
B+
Blue Nile
29851840 · Oct 31
£891 GBP
$1,194 USD
View
3 more retailers have this diamond
Prices start from £757 GBPSave up to £134 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.

A
0.80ct Heart
£757 GBP