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Princess|Natural|GIA

0.51ct I SI1 Princess Natural Diamond

EX • I/SI1 • GIA 2527400704

Certificate GIA 2527400704

Diamond specifications and retailer prices

From £348 GBP
As of November 6, 2026
Save £292 GBP (46%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £640 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 0.51ct natural princess diamond

This 0.51ct natural princess sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2527400704. Listed at 5 retailers as of November 6, 2026, with prices from £348 to £640, a £292 spread on the same certified stone. 77 Diamonds lists it at £640. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2527400704
Dimensions4.27 × 4.26 × 3.09 mm
L/W Ratio1.00
Top View
4.27 mm4.26 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2527400704
Side View
Table 72.0%CrownGirdlePavilionCulet: NoneDepth 72.4%

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: £640 GBP|Low: £348 GBP|High: £647 GBP|Avg: £472 GBP|+1.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 3£348 GBP
Retailer 4£400 GBP
Retailer 2£451 GBP
Retailer 5£518 GBP
77 Diamonds£640 GBP

37 data points across 5 retailers

5 retailers£348 GBP to £640 GBP

A
Cheapest Retailer
-
£348 GBP
B+
Retailer 2
-
£400 GBP
View
B
Retailer 3
-
£451 GBP
View
B
Retailer 4
-
£518 GBP
View
Most Expensive
B
77 Diamonds
PRIZ7EAVJFBZ · Nov 6
£640 GBP
View
4 more retailers have this diamond
Prices start from £348 GBPSave up to £292 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
0.51ct Princess
£348 GBP