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Heart|Natural|GIA

0.55ct G SI1 Heart Natural Diamond

GD • G/SI1 • GIA 6521377206

Certificate GIA 6521377206

Diamond specifications and retailer prices

From £331 GBP
As of November 6, 2026
Save £90 GBP (21%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £421 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 0.55ct natural heart diamond

This 0.55ct natural heart sits in the half to three-quarter carat band, graded G 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 6521377206. Listed at 4 retailers as of November 6, 2026, with prices from £331 to £421, a £90 spread on the same certified stone. 77 Diamonds lists it at £421. 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

0.55
Carat
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6521377206
Dimensions4.97 × 5.87 × 3.23 mm
L/W Ratio1.18
Top View
4.97 mm5.87 mm0.55 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6521377206
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 55.1%

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: Nov 6
Current: £421 GBP|Low: £314 GBP|High: £474 GBP|Avg: £383 GBP|-9.4%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2£331 GBP
Retailer 3£341 GBP
Retailer 4£371 GBP
77 Diamonds£421 GBP

41 data points across 4 retailers

4 retailers£331 GBP to £421 GBP

A
Cheapest Retailer
-
£331 GBP
A
Retailer 2
-
£341 GBP
View
Final sale: no returns
B+
Retailer 3
-
£371 GBP
View
Most Expensive
B+
77 Diamonds
HSCPCNAFMRAC · Nov 6
£421 GBP
View
3 more retailers have this diamond
Prices start from £331 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
0.55ct Heart
£331 GBP