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Round|Natural|GIA

1.53ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2556412690

Certificate GIA 2556412690

Diamond specifications and retailer prices

From £3,155 GBP
$4,228 USD
As of October 30, 2026
Save £3,497 GBP (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £6,883 GBP at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1.53ct natural round diamond

This 1.53ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556412690. Listed at 14 retailers as of October 29, 2026, with a 111% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.53
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556412690
Dimensions7.29 × 7.32 × 4.61 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Needle
Top View
7.29 mm7.32 mm1.53 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556412690
Side View
Table 57.0%Crown 36.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 63.1%

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: Oct 30
Current: £4,508 GBP|Low: £3,155 GBP|High: £6,759 GBP|Avg: £4,366 GBP|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2£3,155 GBP
Retailer 10£3,217 GBP
Retailer 11£3,679 GBP
Retailer 8£4,217 GBP
Retailer 9£4,217 GBP
Retailer 7£4,359 GBP
Retailer 1£4,508 GBP
Retailer 5£4,585 GBP
Retailer 3£4,592 GBP
Retailer 4£4,715 GBP
Retailer 6£6,653 GBP

29 data points across 11 retailers

14 retailers£3,155 GBP to £6,653 GBP

A
Cheapest Retailer
-
£3,155 GBP
$4,228 USD
Retailer 2
-
£3,217 GBP
$4,310 USD
View
Price last confirmed 24 days ago
A
Retailer 3
-
£3,679 GBP
$4,930 USD
View
Retailer 4
-
£3,728 GBP
$4,995 USD
View
Price last confirmed 23 days ago
Retailer 5
-
£3,804 GBP
$5,097 USD
View
Price last confirmed 32 days ago
B+
Retailer 6
-
£4,126 GBP
$5,529 USD
View
B+
Retailer 7
-
£4,217 GBP
$5,650 USD
View
B+
Retailer 8
-
£4,217 GBP
$5,650 USD
View
Retailer 9
-
£4,302 GBP
$5,764 USD
View
Price last confirmed 22 days ago
B+
Retailer 10
-
£4,359 GBP
$5,840 USD
View
B+
Retailer 11
-
£4,508 GBP
View
B+
Retailer 12
-
£4,715 GBP
€6,017 EUR
View
B
Retailer 13
-
£6,653 GBP
View
Most Expensive
NZ Jewellers
e3f72e15-2664-4947-9355-d20b6febb113 · Oct 3
£6,883 GBP
$9,222 USD
View
Price last confirmed 28 days ago
13 more retailers have this diamond
Prices start from £3,155 GBPSave up to £3,497 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
1.53ct Round
£3,155 GBP