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Round|Lab Grown|IGI

1.75ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG786680988

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786680988

Diamond specifications and retailer prices

From $379 NZD
$213 USD
As of November 1, 2026
Save $1,896 NZD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,275 NZD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 1.75ct lab-grown round diamond

This 1.75ct lab-grown 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 IGI LG786680988 or 786680988. Listed at 14 retailers as of November 1, 2026, with prices from $379 to $2,275, a $1,896 spread on the same certified stone. Brilliant Earth lists it at $2,275. 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

1.75
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786680988
Dimensions7.77 × 7.73 × 4.75 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.77 mm7.73 mm1.75 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786680988
Side View
Table 58.0%Crown 33°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,275 NZD|Low: $363 NZD|High: $2,524 NZD|Avg: $1,038 NZD|-9.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 7$379 NZD
Retailer 13$439 NZD
Retailer 8$469 NZD
Retailer 5$475 NZD
Retailer 4$788 NZD
Retailer 3$805 NZD
Retailer 6$866 NZD
Retailer 12$938 NZD
Retailer 11$974 NZD
Retailer 9$1,509 NZD
Retailer 10$1,514 NZD
Retailer 2$1,880 NZD
Brilliant Earth$2,275 NZD

42 data points across 13 retailers

14 retailers$379 NZD to $2,275 NZD

A
Cheapest Retailer
-
$379 NZD
$213 USD
A
Retailer 2
-
$439 NZD
$247 USD
View
A
Retailer 3
-
$469 NZD
$264 USD
View
Retailer 4
-
$475 NZD
$267 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$788 NZD
€422 EUR
View
B+
Retailer 6
-
$805 NZD
$453 USD
View
A
Retailer 7
-
$866 NZD
£384 GBP
View
A
Retailer 8
-
$938 NZD
$528 USD
View
A
Retailer 9
-
$974 NZD
$548 USD
View
B+
Retailer 10
-
$1,484 NZD
$835 USD
View
B+
Retailer 11
-
$1,509 NZD
$849 USD
View
B+
Retailer 12
-
$1,514 NZD
$852 USD
View
B
Retailer 13
-
$1,880 NZD
£833 GBP
View
Most Expensive
B
Brilliant Earth
19039781A · Nov 1
$2,275 NZD
$1,280 USD
View
13 more retailers have this diamond
Prices start from $379 NZDSave up to $1,896 NZD

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
1.75ct Round
$379 NZD