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Oval|Natural|GIA

1.55ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 1557995418

Certificate GIA 1557995418

Diamond specifications and retailer prices

From £1,539 GBP
As of November 6, 2026
Save £2,787 GBP (64%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £4,611 GBP at NZ Jewellers · As of October 14, 2026
View at NZ Jewellers

About this 1.55ct natural oval diamond

This 1.55ct natural oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1557995418. Listed at 21 retailers as of November 5, 2026, with a 181% 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

1.55
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1557995418
Dimensions9.20 × 6.52 × 3.93 mm
L/W Ratio1.41
Top View
9.20 mm6.52 mm1.55 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1557995418
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.3%

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: Nov 6
Current: £4,327 GBP|Low: £1,539 GBP|High: £4,611 GBP|Avg: £2,402 GBP|-6.2%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 5£1,539 GBP
Retailer 18£1,854 GBP
Retailer 17£1,916 GBP
Retailer 10£1,957 GBP
Retailer 8£1,985 GBP
Retailer 2£2,007 GBP
Retailer 16£2,069 GBP
Retailer 7£2,137 GBP
Retailer 12£2,143 GBP
Retailer 4£2,149 GBP
Retailer 11£2,175 GBP
Retailer 14£2,190 GBP
Retailer 9£2,303 GBP
Retailer 6£2,388 GBP
Retailer 13£2,408 GBP
Retailer 15£2,525 GBP
Retailer 3£3,615 GBP
NZ Jewellers£4,327 GBP

23 data points across 18 retailers

21 retailers£1,539 GBP to £4,327 GBP

A
Cheapest Retailer
-
£1,539 GBP
A
Retailer 2
-
£1,854 GBP
View
A
Retailer 3
-
£1,916 GBP
View
A
Retailer 4
-
£1,957 GBP
View
A
Retailer 5
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£1,985 GBP
View
A
Retailer 6
-
£2,007 GBP
View
A
Retailer 7
-
£2,069 GBP
View
Retailer 8
-
£2,137 GBP
View
Price last confirmed 8 days ago
A
Retailer 9
-
£2,143 GBP
View
A
Retailer 10
-
£2,149 GBP
View
A
Retailer 11
-
£2,175 GBP
View
A
Retailer 12
-
£2,190 GBP
View
Retailer 13
-
£2,205 GBP
View
Price last confirmed 23 days ago
A
Retailer 14
-
£2,303 GBP
View
A
Retailer 15
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£2,388 GBP
View
A
Retailer 16
-
£2,408 GBP
View
A
Retailer 17
-
£2,525 GBP
View
Retailer 18
-
£2,545 GBP
View
Price last confirmed 23 days ago
B+
Retailer 19
-
£3,615 GBP
View
B+
Retailer 20
-
£4,327 GBP
View
Most Expensive
NZ Jewellers
4e6a7ddd-06b5-4359-91aa-7e1456e22559 · Oct 14
£4,611 GBP
$6,172 USD
View
Price last confirmed 23 days ago
20 more retailers have this diamond
Prices start from £1,539 GBPSave up to £2,787 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
1.55ct Oval
£1,539 GBP