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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 $304 AUD
$213 USD
As of November 1, 2026
Save $1,523 AUD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,826 AUD 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 13 retailers as of November 1, 2026, with prices from $304 to $1,826, a $1,523 spread on the same certified stone. Brilliant Earth lists it at $1,826. 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

How it works →
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: $1,826 AUD|Low: $291 AUD|High: $2,026 AUD|Avg: $833 AUD|-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 6$304 AUD
Retailer 12$352 AUD
Retailer 7$377 AUD
Retailer 5$381 AUD
Retailer 3$632 AUD
Retailer 13$646 AUD
Retailer 2$696 AUD
Retailer 11$753 AUD
Retailer 10$782 AUD
Retailer 8$1,211 AUD
Retailer 9$1,216 AUD
Retailer 4$1,537 AUD
Brilliant Earth$1,826 AUD

43 data points across 13 retailers

13 retailers$304 AUD to $1,826 AUD

A
Cheapest Retailer
-
$304 AUD
$213 USD
A
Retailer 2
-
$352 AUD
$247 USD
View
A
Retailer 3
-
$377 AUD
$264 USD
View
Retailer 4
-
$381 AUD
$267 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$632 AUD
€422 EUR
View
B+
Retailer 6
-
$646 AUD
$453 USD
View
A
Retailer 7
-
$696 AUD
£384 GBP
View
A
Retailer 8
-
$753 AUD
$528 USD
View
A
Retailer 9
-
$782 AUD
$548 USD
View
B+
Retailer 10
-
$1,211 AUD
$849 USD
View
B+
Retailer 11
-
$1,216 AUD
$852 USD
View
B
Retailer 12
-
$1,537 AUD
£848 GBP
View
Most Expensive
B
Brilliant Earth
19039781A · Nov 1
$1,826 AUD
$1,280 USD
View
12 more retailers have this diamond
Prices start from $304 AUDSave up to $1,523 AUD

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
$304 AUD