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Heart|Natural|GIA

0.53ct H SI1 Heart Natural Diamond

GD • H/SI1 • GIA 6551298153

Certificate GIA 6551298153

Diamond specifications and retailer prices

From £321 GBP
As of November 6, 2026
Save £90 GBP (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £411 GBP at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

About this 0.53ct natural heart diamond

This 0.53ct natural heart sits in the half to three-quarter carat band, graded H 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 6551298153. Listed at 4 retailers as of November 5, 2026, with prices from £321 to £411, a £90 spread on the same certified stone. 77 Diamonds lists it at £411. 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

0.53
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551298153
Dimensions5.04 × 5.73 × 3.30 mm
L/W Ratio1.14
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather
Top View
5.04 mm5.73 mm0.53 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551298153
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.6%

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 6
Current: £411 GBP|Low: £299 GBP|High: £448 GBP|Avg: £363 GBP|-6.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 2£321 GBP
Retailer 3£331 GBP
Retailer 4£359 GBP
77 Diamonds£411 GBP

40 data points across 4 retailers

4 retailers£321 GBP to £411 GBP

A
Cheapest Retailer
-
£321 GBP
A
Retailer 2
-
£331 GBP
View
Final sale: no returns
B+
Retailer 3
-
£359 GBP
View
Most Expensive
B+
77 Diamonds
HSCP7MEQWE8Y · Nov 5
£411 GBP
View
3 more retailers have this diamond
Prices start from £321 GBPSave up to £90 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
0.53ct Heart
£321 GBP