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1.56ct L SI1 Round Natural Diamond

GD • L/SI1 • GIA 5172481637

Certificate GIA 5172481637

Diamond specifications and retailer prices

From £3,096 GBP
As of November 6, 2026
2 retailers carry this diamond
Most expensive: £4,017 GBP at 77 Diamonds · As of October 16, 2026
View at 77 Diamonds

About this 1.56ct natural round diamond

This 1.56ct 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 standard cut grade and certified by GIA 5172481637. Listed at 2 retailers as of November 6, 2026. 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

1.56
Carat
L
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryGood
FluorescenceVery Strong
Crown angle35.5°
Pavilion angle42.6°
OriginNatural
Grading LabGIA
CertificateGIA 5172481637
Dimensions7.34 × 7.40 × 4.71 mm
L/W Ratio1.01
Star length55%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Laser Drill Hole, Crystal, Cloud, Needle
Top View
7.34 mm7.40 mm1.56 ctL / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceVery Strong
CertificateGIA 5172481637
Side View
Table 59.0%Crown 35.5°Girdle: THN-STKPavilion 42.6°Culet: NoneDepth 63.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £4,017 GBP|Low: £3,096 GBP|High: £4,540 GBP|Avg: £3,897 GBP|-2.8%
77 Diamonds
Retailer 2
Retailer 3
October 16, 2026
Retailer 2£3,096 GBP
77 Diamonds£4,017 GBP
Retailer 3£4,540 GBP

3 data points across 3 retailers

2 retailers

B
Cheapest Retailer
-
£3,096 GBP
Most Expensive
77 Diamonds
RBPUIFSXCFWKCND · Oct 16
£4,017 GBP
View
Price last confirmed 21 days ago
1 more retailer has this diamond
Prices start from £3,096 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.

B
1.56ct Round
£3,096 GBP