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1.68ct M SI1 Round Natural Diamond

EX • M/SI1 • IGI 642437812

Shape and cutting style on the report: Round brilliant

Certificate IGI 642437812

Diamond specifications and retailer prices

From £1,408 GBP
As of November 6, 2026
Save £705 GBP (33%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,113 GBP at Yorxs · As of November 5, 2026
View at Yorxs

About this 1.68ct natural round diamond

This 1.68ct natural round 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 and certified by IGI 642437812. Listed at 10 retailers as of November 5, 2026, with prices from £1,408 to £2,113, a £705 spread on the same certified stone. Yorxs lists it at £2,113. 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

1.68
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.4°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 642437812
Dimensions7.51 × 7.56 × 4.77 mm
L/W Ratio1.01
Girdle conditionPARTLY FACETED
Culet sizePointed
Top View
7.51 mm7.56 mm1.68 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 642437812
Side View
Table 55.0%Crown 36.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.3%

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: £1,902 GBP|Low: £1,103 GBP|High: £2,518 GBP|Avg: £1,705 GBP|+2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Yorxs
November 5, 2026
Retailer 4£1,103 GBP
Retailer 8£1,408 GBP
Retailer 7£1,508 GBP
Retailer 5£1,558 GBP
Retailer 11£1,558 GBP
Retailer 6£1,580 GBP
Retailer 10£1,630 GBP
Retailer 2£1,662 GBP
Retailer 9£1,727 GBP
Retailer 12£1,798 GBP
Retailer 1£1,902 GBP
Yorxs£2,113 GBP
Retailer 3£2,518 GBP

23 data points across 13 retailers

10 retailers£1,408 GBP to £2,113 GBP

A
Cheapest Retailer
-
£1,408 GBP
B+
Retailer 2
-
£1,508 GBP
View
B+
Retailer 3
-
£1,558 GBP
View
Retailer 4
-
£1,558 GBP
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£1,580 GBP
View
B+
Retailer 6
-
£1,630 GBP
View
B+
Retailer 7
-
£1,662 GBP
View
B+
Retailer 8
-
£1,798 GBP
View
B+
Retailer 9
-
£1,902 GBP
View
Most Expensive
B+
Yorxs
CFFFB0712 · Nov 5
£2,113 GBP
€2,693 EUR
View
9 more retailers have this diamond
Prices start from £1,408 GBPSave up to £705 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
1.68ct Round
£1,408 GBP