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Round|Natural|GIA

1.54ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6555994350

Certificate GIA 6555994350

Diamond specifications and retailer prices

From £3,258 GBP
HK$34,100 HKD
As of October 31, 2026
Save £4,247 GBP (57%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £7,504 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.54ct natural round diamond

This 1.54ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555994350. Listed at 9 retailers as of October 30, 2026, with prices from £3,258 to £7,504, a £4,247 spread on the same certified stone. NZ Jewellers lists it at £7,504. 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

1.54
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6555994350
Dimensions7.32 × 7.38 × 4.56 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.32 mm7.38 mm1.54 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555994350
Side View
Table 60.0%CrownGirdle: MED-STKPavilion 41°Culet: NoneDepth 62.1%

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 31
Current: £7,504 GBP|Low: £3,258 GBP|High: £8,127 GBP|Avg: £4,975 GBP|-7.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 6£3,258 GBP
Retailer 3£3,677 GBP
Retailer 9£3,837 GBP
Retailer 5£3,847 GBP
Retailer 4£4,441 GBP
Retailer 8£4,487 GBP
Retailer 7£4,884 GBP
Retailer 2£6,542 GBP
NZ Jewellers£7,504 GBP

42 data points across 9 retailers

9 retailers£3,258 GBP to £7,504 GBP

A
Cheapest Retailer
-
£3,258 GBP
HK$34,100 HKD
A
Retailer 2
-
£3,677 GBP
€4,692 EUR
View
Retailer 3
-
£3,837 GBP
SGD 6,947 SGD
View
Price last confirmed 8 days ago
A
Retailer 4
-
£3,847 GBP
$5,154 USD
View
B+
Retailer 5
-
£4,441 GBP
$5,950 USD
View
B+
Retailer 6
-
£4,487 GBP
$6,012 USD
View
B+
Retailer 7
-
£4,884 GBP
€6,233 EUR
View
B
Retailer 8
-
£6,542 GBP
View
Most Expensive
B
NZ Jewellers
c08ad982-cb7d-47d5-8d83-4f50be2bec40 · Oct 30
£7,504 GBP
$10,055 USD
View
8 more retailers have this diamond
Prices start from £3,258 GBPSave up to £4,247 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
1.54ct Round
£3,258 GBP