Round|Lab Grown|GIA

1.70ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 1236008140

Certificate GIA 1236008140

Diamond specifications and retailer prices

From €1,228 EUR
$1,372 USD
As of November 1, 2026
Save €208 EUR (15%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €3,240 EUR at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1236008140. Listed at 3 retailers as of October 31, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.70
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 1236008140
Dimensions7.71 × 7.73 × 4.71 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
7.71 mm7.73 mm1.70 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1236008140
Side View
Table 57.0%Crown 34.5°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 61.0%

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: €3,240 EUR|Low: €1,228 EUR|High: €3,240 EUR|Avg: €1,754 EUR
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 3€1,228 EUR
Retailer 4€1,343 EUR
Retailer 5€1,343 EUR
Retailer 2€1,436 EUR
Retailer 6€1,933 EUR
Do Amore Diamonds€3,240 EUR

18 data points across 6 retailers

3 retailers€1,228 EUR to €1,436 EUR

B
Cheapest Retailer
-
€1,228 EUR
$1,372 USD
B
Retailer 2
-
€1,436 EUR
View
Most Expensive
Do Amore Diamonds
24-2309-2412A · Oct 31
€3,240 EUR
$3,620 USD
View
Price under review
2 more retailers have this diamond
Prices start from €1,228 EURSave up to €208 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
1.70ct Round
€1,228 EUR