Oval|Natural|GIA

1.57ct K SI1 Oval Natural Diamond

GD • K/SI1 • GIA 2536975423

Certificate GIA 2536975423

Diamond specifications and retailer prices

From £2,507 GBP
As of November 6, 2026
Save £2,654 GBP (51%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £6,697 GBP at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1.57ct natural oval diamond

This 1.57ct 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2536975423. Listed at 19 retailers as of November 2, 2026, with a 106% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.57
Carat
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2536975423
Dimensions9.22 × 6.50 × 4.08 mm
L/W Ratio1.42
Top View
9.22 mm6.50 mm1.57 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2536975423
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 62.8%

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: Nov 6
Current: £2,848 GBP|Low: £2,507 GBP|High: £5,462 GBP|Avg: £3,314 GBP|-15.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8£2,507 GBP
Retailer 7£2,584 GBP
Retailer 11£2,637 GBP
Retailer 2£2,771 GBP
Retailer 1£2,848 GBP
Retailer 10£3,003 GBP
Retailer 4£3,007 GBP
Retailer 5£3,045 GBP
Retailer 3£3,277 GBP
Retailer 6£3,302 GBP
Retailer 9£3,619 GBP
Retailer 12£5,161 GBP

19 data points across 12 retailers

19 retailers£2,507 GBP to £5,161 GBP

A
Cheapest Retailer
-
£2,507 GBP
A
Retailer 2
-
£2,584 GBP
View
A
Retailer 3
-
£2,637 GBP
View
B+
Retailer 4
-
£2,771 GBP
View
B+
Retailer 5
-
£2,848 GBP
View
B+
Retailer 6
-
£3,003 GBP
View
Retailer 7
-
£3,007 GBP
View
Price last confirmed 16 days ago
B+
Retailer 8
-
£3,045 GBP
View
Retailer 9
-
£3,277 GBP
View
Price last confirmed 12 days ago
B+
Retailer 10
-
£3,302 GBP
View
Retailer 11
-
£3,457 GBP
View
Price last confirmed 42 days ago
B+
Retailer 12
-
£3,619 GBP
View
Retailer 13
-
£3,989 GBP
View
Price last confirmed 44 days ago
Retailer 14
-
£4,005 GBP
View
Price last confirmed 33 days ago
Retailer 15
-
£4,167 GBP
View
Price last confirmed 38 days ago
Retailer 16
-
£4,620 GBP
View
Price last confirmed 33 days ago
B
Retailer 17
-
£5,161 GBP
View
Retailer 18
-
£6,022 GBP
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
4f2f2fff-6296-4c47-94a1-137b986ca760 · Oct 3
£6,697 GBP
$8,964 USD
View
Price last confirmed 34 days ago
18 more retailers have this diamond
Prices start from £2,507 GBPSave up to £2,654 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
1.57ct Oval
£2,507 GBP