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Oval|Natural|GIA

1.60ct M SI1 Oval Natural Diamond

ID • M/SI1 • GIA 6561121121

Certificate GIA 6561121121

Diamond specifications and retailer prices

From £1,245 GBP
As of November 6, 2026
Save £894 GBP (42%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,603 GBP at NZ Jewellers · As of October 9, 2026
View at NZ Jewellers

About this 1.6ct natural oval diamond

This 1.6ct natural oval sits in the one-and-a-half to two carat band, graded M 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 6561121121. Listed at 14 retailers as of November 6, 2026, with a 72% 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

1.60
Carat
M
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6561121121
Dimensions8.90 × 6.33 × 4.02 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Cloud
Top View
8.90 mm6.33 mm1.60 ctM / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6561121121
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.6%

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: £1,245 GBP|Low: £1,245 GBP|High: £2,197 GBP|Avg: £1,759 GBP|-11.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1£1,245 GBP
Retailer 6£1,591 GBP
Retailer 5£1,599 GBP
Retailer 2£1,718 GBP
Retailer 7£1,726 GBP
Retailer 8£1,827 GBP
Retailer 4£2,103 GBP
Retailer 3£2,139 GBP

39 data points across 8 retailers

14 retailers£1,245 GBP to £2,139 GBP

A
Cheapest Retailer
-
£1,245 GBP
B+
Retailer 2
-
£1,591 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,599 GBP
View
B+
Retailer 4
-
£1,665 GBP
View
A
Retailer 5
-
£1,718 GBP
View
Retailer 6
-
£1,724 GBP
View
Price last confirmed 30 days ago
Retailer 7
-
£1,724 GBP
View
Price last confirmed 29 days ago
B+
Retailer 8
-
£1,726 GBP
View
B+
Retailer 9
-
£1,827 GBP
View
Retailer 10
-
£1,854 GBP
View
Price last confirmed 38 days ago
Retailer 11
-
£1,989 GBP
View
Price last confirmed 28 days ago
B+
Retailer 12
-
£2,103 GBP
View
B+
Retailer 13
-
£2,139 GBP
View
Most Expensive
NZ Jewellers
c5ba6d00-d51a-48ee-a872-fdafce3103e9 · Oct 9
£3,603 GBP
$4,823 USD
View
Price last confirmed 28 days ago
13 more retailers have this diamond
Prices start from £1,245 GBPSave up to £894 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
1.60ct Oval
£1,245 GBP