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Round|Natural|GIA

3.70ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566388012

Certificate GIA 2566388012

Diamond specifications and retailer prices

From $36,288 USD
HK$283,500 HKD
As of October 28, 2026
Save $29,932 USD (45%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $66,220 USD at MOH London · As of October 26, 2026
View at MOH London

About this 3.7ct natural round diamond

This 3.7ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566388012. Listed at 8 retailers as of October 26, 2026, with prices from $36,288 to $66,220, a $29,932 spread on the same certified stone. MOH London lists it at $66,220. 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

3.70
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2566388012
Dimensions9.78 × 9.84 × 6.16 mm
L/W Ratio1.01
Girdle conditionMedium to Slightly Thick
Culet sizeNone
Top View
9.78 mm9.84 mm3.70 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566388012
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: 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: Oct 28
Current: $66,220 USD|Low: $36,288 USD|High: $70,268 USD|Avg: $47,132 USD|-5.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 27, 2026
Retailer 6$36,288 USD
Retailer 3$37,816 USD
Retailer 8$39,965 USD
Retailer 5$41,784 USD
Retailer 2$42,096 USD
Retailer 7$47,082 USD
Retailer 4$51,165 USD
MOH London$66,220 USD

28 data points across 8 retailers

8 retailers$36,288 USD to $66,220 USD

A
Cheapest Retailer
-
$36,288 USD
HK$283,500 HKD
B+
Retailer 2
-
$37,816 USD
₹3,601,549 INR
View
Retailer 3
-
$39,965 USD
View
Price last confirmed 14 days ago
B+
Retailer 4
-
$41,784 USD
View
B+
Retailer 5
-
$42,096 USD
£33,147 GBP
View
Retailer 6
-
$47,082 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$51,165 USD
€48,729 EUR
View
Most Expensive
B
MOH London
9A527CA8F · Oct 26
$66,220 USD
£52,142 GBP
View
7 more retailers have this diamond
Prices start from $36,288 USDSave up to $29,932 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.

A
3.70ct Round
$36,288 USD