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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2125868320

Certificate GIA 2125868320

Diamond specifications and retailer prices

From €7,955 EUR
$8,887 USD
As of October 30, 2026
Save €7,359 EUR (48%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €15,314 EUR at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2125868320. Listed at 19 retailers as of October 30, 2026, with prices from €7,955 to €15,314, a €7,359 spread on the same certified stone. Diamond Quarter lists it at €15,314. 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

1.51
Carat
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2125868320
Dimensions7.37 × 7.35 × 4.56 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.37 mm7.35 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2125868320
Side View
Table 57.0%CrownGirdle: MediumPavilionCulet: NoneDepth 62.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €13,657 EUR|Low: €7,287 EUR|High: €14,574 EUR|Avg: €10,513 EUR|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 6€7,783 EUR
Retailer 7€8,744 EUR
Retailer 10€8,744 EUR
Retailer 11€9,474 EUR
Retailer 4€9,508 EUR
Retailer 8€9,619 EUR
Retailer 5€10,474 EUR
Retailer 9€10,931 EUR
Retailer 3€11,507 EUR
Retailer 1€13,657 EUR
Retailer 2€14,574 EUR

40 data points across 11 retailers

19 retailers€7,955 EUR to €15,314 EUR

Retailer 1
-
€7,783 EUR
$8,695 USD
Price last confirmed 7 days ago
B
Retailer 2
-
€7,955 EUR
$8,887 USD
View
B
Retailer 3
-
€8,113 EUR
$9,064 USD
View
B
Retailer 4
-
€8,416 EUR
CA$13,059 CAD
View
B
Retailer 5
-
€8,744 EUR
$9,769 USD
View
B
Retailer 6
-
€8,744 EUR
$9,769 USD
View
Final sale: no returns
B
Retailer 7
-
€9,474 EUR
$10,584 USD
View
B
Retailer 8
-
€9,508 EUR
£8,364 GBP
View
B
Retailer 9
-
€9,619 EUR
$10,746 USD
View
B
Retailer 10
-
€10,089 EUR
$11,272 USD
View
B
Retailer 11
-
€10,258 EUR
$11,460 USD
View
B
Retailer 12
-
€10,258 EUR
$11,460 USD
View
B
Retailer 13
-
€10,474 EUR
View
B
Retailer 14
-
€10,607 EUR
$11,850 USD
View
B
Retailer 15
-
€10,931 EUR
$12,212 USD
View
Retailer 16
-
€11,507 EUR
$12,856 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
€13,657 EUR
£12,014 GBP
View
B
Retailer 18
-
€14,574 EUR
$16,282 USD
View
Most Expensive
B
Diamond Quarter
1.51SI2H2120A7B6N · Oct 31
€15,314 EUR
£13,471 GBP
View
18 more retailers have this diamond
Prices start from €7,955 EURSave up to €7,359 EUR

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
1.51ct Round
€7,955 EUR