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Heart|Natural|GIA

0.65ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 2536242964

Certificate GIA 2536242964

Diamond specifications and retailer prices

From £339 GBP
MYR 1,852 MYR
As of November 2, 2026
Save £108 GBP (24%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £447 GBP at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.65ct natural heart diamond

This 0.65ct natural heart sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2536242964. Listed at 5 retailers as of October 31, 2026, with prices from £339 to £447, a £108 spread on the same certified stone. Blue Nile lists it at £447. 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

0.65
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2536242964
Dimensions5.51 × 6.03 × 3.33 mm
L/W Ratio1.09
Top View
5.51 mm6.03 mm0.65 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2536242964
Side View
Table 56.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 55.2%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: £447 GBP|Low: £324 GBP|High: £529 GBP|Avg: £404 GBP|-15.5%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 3, 2026
Retailer 3£339 GBP
Retailer 5£346 GBP
Retailer 4£376 GBP
Retailer 2£434 GBP
Blue Nile£447 GBP

40 data points across 5 retailers

5 retailers£339 GBP to £447 GBP

A
Cheapest Retailer
-
£339 GBP
MYR 1,852 MYR
A
Retailer 2
-
£346 GBP
$464 USD
View
Final sale: no returns
A
Retailer 3
-
£376 GBP
SGD 681 SGD
View
B+
Retailer 4
-
£434 GBP
View
Most Expensive
B+
Blue Nile
26373293 · Oct 31
£447 GBP
$600 USD
View
4 more retailers have this diamond
Prices start from £339 GBPSave up to £108 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
0.65ct Heart
£339 GBP