Round|Natural|GIA

1.61ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 5426317636

Certificate GIA 5426317636

Diamond specifications and retailer prices

From $12,144 USD
As of November 1, 2026
Save $8,407 USD (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $20,551 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.61ct natural round diamond

This 1.61ct natural round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5426317636. Listed at 14 retailers as of October 29, 2026, with prices from $12,144 to $20,551, a $8,407 spread on the same certified stone. MOH London lists it at $20,551. 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

1.61
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5426317636
Dimensions7.47 × 7.45 × 4.64 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
7.47 mm7.45 mm1.61 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5426317636
Side View
Table 58.0%Crown 36°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 1
Current: $20,551 USD|Low: $11,800 USD|High: $20,688 USD|Avg: $15,388 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6$11,800 USD
Retailer 9$12,144 USD
Retailer 10$13,089 USD
Retailer 4$13,757 USD
Retailer 7$14,056 USD
Retailer 8$14,364 USD
Retailer 2$16,420 USD
Retailer 3$17,137 USD
Retailer 5$19,229 USD
MOH London$20,551 USD

31 data points across 10 retailers

14 retailers$12,144 USD to $20,551 USD

Retailer 1
-
$11,800 USD
Price last confirmed 9 days ago
B
Retailer 2
-
$12,144 USD
View
B
Retailer 3
-
$13,757 USD
£10,832 GBP
View
Retailer 4
-
$14,056 USD
A$21,625 AUD
View
Price last confirmed 10 days ago
Retailer 5
-
$14,179 USD
View
Price last confirmed 46 days ago
B
Retailer 6
-
$14,364 USD
View
Retailer 7
-
$14,364 USD
View
Price last confirmed 35 days ago
Retailer 8
-
$14,364 USD
View
Price last confirmed 19 days ago
Retailer 9
-
$14,725 USD
View
Price last confirmed 44 days ago
B
Retailer 10
-
$16,420 USD
€15,638 EUR
View
B
Retailer 11
-
$17,137 USD
£13,494 GBP
View
Retailer 12
-
$18,542 USD
View
Price last confirmed 45 days ago
B
Retailer 13
-
$19,229 USD
ZAR 310,648 ZAR
View
Most Expensive
B
MOH London
ECE894335 · Oct 29
$20,551 USD
£16,182 GBP
View
13 more retailers have this diamond
Prices start from $12,144 USDSave up to $8,407 USD

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
1.61ct Round
$12,144 USD