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Round|Natural|GIA

1.55ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2547875031

Certificate GIA 2547875031

Diamond specifications and retailer prices

From £3,615 GBP
As of November 4, 2026
Save £2,719 GBP (43%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £6,334 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2547875031. Listed at 12 retailers as of November 4, 2026, with prices from £3,615 to £6,334, a £2,719 spread on the same certified stone. Wholesale Diamonds Direct lists it at £6,334. 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

1.55
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2547875031
Dimensions7.32 × 7.36 × 4.60 mm
L/W Ratio1.01
Top View
7.32 mm7.36 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2547875031
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £5,530 GBP|Low: £3,615 GBP|High: £6,397 GBP|Avg: £4,639 GBP|-3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 5, 2026
Retailer 2£3,615 GBP
Retailer 6£3,618 GBP
Retailer 7£4,277 GBP
Retailer 4£4,299 GBP
Retailer 10£4,346 GBP
Retailer 3£4,418 GBP
Retailer 8£4,584 GBP
Retailer 9£4,584 GBP
Retailer 5£4,630 GBP
Retailer 11£4,740 GBP
Retailer 1£5,530 GBP
Wholesale Diamonds Direct£6,334 GBP

42 data points across 12 retailers

12 retailers£3,615 GBP to £6,334 GBP

B+
Cheapest Retailer
-
£3,615 GBP
B+
Retailer 2
-
£3,618 GBP
View
B+
Retailer 3
-
£4,277 GBP
View
B+
Retailer 4
-
£4,299 GBP
View
B+
Retailer 5
-
£4,346 GBP
View
B
Retailer 6
-
£4,418 GBP
View
B
Retailer 7
-
£4,584 GBP
View
B
Retailer 8
-
£4,584 GBP
View
B+
Retailer 9
-
£4,630 GBP
View
B
Retailer 10
-
£4,740 GBP
View
B
Retailer 11
-
£5,530 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
235736463 · Nov 6
£6,334 GBP
$8,525 USD
View
11 more retailers have this diamond
Prices start from £3,615 GBPSave up to £2,719 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.

B+
1.55ct Round
£3,615 GBP