Round|Natural|IGI

1.54ct L SI1 Round Natural Diamond

EX • L/SI1 • IGI 670438186

Shape and cutting style on the report: Round brilliant

Certificate IGI 670438186

Diamond specifications and retailer prices

From £1,164 GBP
As of November 5, 2026
Save £415 GBP (26%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,115 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 670438186. Listed at 12 retailers as of October 31, 2026, with a 36% 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

1.54
Carat
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.6°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 670438186
Dimensions7.25 × 7.31 × 4.63 mm
L/W Ratio1.01
Girdle conditionPARTLY FACETED
Culet sizePointed
Top View
7.25 mm7.31 mm1.54 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 670438186
Side View
Table 56.0%Crown 36.6°Girdle: MediumPavilion 40.9°Culet: NoneDepth 63.5%

Caratlytics Score

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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 5
Current: £3,115 GBP|Low: £858 GBP|High: £3,115 GBP|Avg: £1,507 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 6£858 GBP
Retailer 10£1,164 GBP
Retailer 13£1,267 GBP
Retailer 3£1,277 GBP
Retailer 9£1,277 GBP
Retailer 11£1,326 GBP
Retailer 12£1,336 GBP
Retailer 4£1,378 GBP
Retailer 2£1,390 GBP
Retailer 14£1,473 GBP
Retailer 7£1,558 GBP
Retailer 8£1,580 GBP
Retailer 5£2,063 GBP
NZ Jewellers£3,115 GBP

37 data points across 14 retailers

12 retailers£1,164 GBP to £1,580 GBP

A
Cheapest Retailer
-
£1,164 GBP
A
Retailer 2
-
£1,267 GBP
View
Retailer 3
-
£1,277 GBP
View
Price last confirmed 8 days ago
A
Retailer 4
-
£1,277 GBP
View
B+
Retailer 5
-
£1,326 GBP
View
Retailer 6
-
£1,336 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,378 GBP
View
A
Retailer 8
-
£1,390 GBP
View
B+
Retailer 9
-
£1,473 GBP
View
A
Retailer 10
-
£1,558 GBP
View
B+
Retailer 11
-
£1,580 GBP
View
Most Expensive
NZ Jewellers
0cc48aca-18e6-471c-97b8-5d80ea2a5fa0 · Oct 30
£3,115 GBP
$4,192 USD
View
Price last confirmed 7 days ago
11 more retailers have this diamond
Prices start from £1,164 GBPSave up to £415 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
£1,164 GBP