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Heart|Natural|GIA

0.63ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 1529486595

Certificate GIA 1529486595

Diamond specifications and retailer prices

From £326 GBP
MYR 1,782 MYR
As of November 2, 2026
Save £108 GBP (25%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £434 GBP at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.63ct natural heart diamond

This 0.63ct 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 1529486595. Listed at 5 retailers as of October 31, 2026, with prices from £326 to £434, a £108 spread on the same certified stone. Blue Nile lists it at £434. 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

0.63
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1529486595
Dimensions5.42 × 6.01 × 3.35 mm
L/W Ratio1.11
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
5.42 mm6.01 mm0.63 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1529486595
Side View
Table 56.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 55.8%

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: £434 GBP|Low: £309 GBP|High: £477 GBP|Avg: £386 GBP|-9.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 2£326 GBP
Retailer 4£333 GBP
Retailer 5£362 GBP
Retailer 3£418 GBP
Blue Nile£434 GBP

42 data points across 5 retailers

5 retailers£326 GBP to £434 GBP

A
Cheapest Retailer
-
£326 GBP
MYR 1,782 MYR
A
Retailer 2
-
£333 GBP
$447 USD
View
Final sale: no returns
A
Retailer 3
-
£362 GBP
SGD 656 SGD
View
B+
Retailer 4
-
£418 GBP
View
Most Expensive
B+
Blue Nile
25365862 · Oct 31
£434 GBP
$582 USD
View
4 more retailers have this diamond
Prices start from £326 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
0.63ct Heart
£326 GBP