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Princess|Natural|GIA

1.28ct I SI2 Princess Natural Diamond

EX • I/SI2 • GIA 1539720775

Certificate GIA 1539720775

Diamond specifications and retailer prices

From £1,940 GBP
$2,600 USD
As of October 31, 2026
Save £336 GBP (15%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,276 GBP at Jared · As of October 30, 2026
View at Jared

About this 1.28ct natural princess diamond

This 1.28ct natural princess sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1539720775. Listed at 4 retailers as of October 30, 2026, with prices from £1,940 to £2,276, a £336 spread on the same certified stone. Jared lists it at £2,276. 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

1.28
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1539720775
Dimensions6.10 × 5.94 × 4.38 mm
L/W Ratio1.03
Girdle conditionPolished
Top View
6.10 mm5.94 mm1.28 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1539720775
Side View
Table 73.0%CrownGirdle: MediumPavilionCulet: NoneDepth 73.8%

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: Oct 31
Current: £2,276 GBP|Low: £1,940 GBP|High: £2,894 GBP|Avg: £2,442 GBP|-0.3%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
September 26, 2026
Retailer 2£1,940 GBP
Retailer 3£2,202 GBP
Retailer 4£2,202 GBP
Jared£2,276 GBP
Retailer 5£2,894 GBP

9 data points across 5 retailers

4 retailers£1,940 GBP to £2,276 GBP

A
Cheapest Retailer
-
£1,940 GBP
$2,600 USD
B+
Retailer 2
-
£2,202 GBP
$2,950 USD
View
B+
Retailer 3
-
£2,202 GBP
$2,950 USD
View
Most Expensive
B+
Jared
156669217 · Oct 30
£2,276 GBP
$3,050 USD
View
3 more retailers have this diamond
Prices start from £1,940 GBPSave up to £336 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
1.28ct Princess
£1,940 GBP